Hook rack



FIG. 1 is a perspective view of a hook rack showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is top plan view thereof.

The broken-line disclosure of elements in the views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a hook rack, as shown and described. 